2138115 has 24 divisors (see below), whose sum is σ = 3980880. Its totient is φ = 977088.

The previous prime is 2138093. The next prime is 2138137. The reversal of 2138115 is 5118312.

It is an interprime number because it is at equal distance from previous prime (2138093) and next prime (2138137).

It is not a de Polignac number, because 2138115 - 2⁷ = 2137987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

2138115 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2138091 and 2138100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 720 + ... + 2189.

It is an arithmetic number, because the mean of its divisors is an integer number (165870).

2^2138115 is an apocalyptic number.

2138115 is a deficient number, since it is larger than the sum of its proper divisors (1842765).

2138115 is a wasteful number, since it uses less digits than its factorization.

2138115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931 (or 2924 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 2138115 is about 1462.2294621570. The cubic root of 2138115 is about 128.8280263523.

The spelling of 2138115 in words is "two million, one hundred thirty-eight thousand, one hundred fifteen".